</pre><span style="white-space:pre"> </span>global->Set(v8::String::NewFromUtf8(GetIsolate(), "SetName"),<span style="white-space:pre"> </span>v8::FunctionTemplate::New(GetIsolate(), MineScript::SetName));<span style="white-space:pre"> </span><span style="white-space:pre"> </span>v8::Handle<v8::Context> context=Context::New(GetIsolate(),NULL,global);<span style="white-space:pre"> </span><span style="white-space:pre"> </span>//context->DetachGlobal();<span style="white-space:pre"> </span>Context::Scope context_scope(context);<span style="white-space:pre"> </span>Handle<Object> result = global->NewInstance();<span style="white-space:pre"> </span>Handle<External> request_ptr = External::New(GetIsolate(),m_pBase);<span style="white-space:pre"> </span>result->SetInternalField(0, request_ptr);<span style="white-space:pre"> </span>context->Global()->Set(v8::String::NewFromUtf8(GetIsolate(), "point"), result);<pre name="code" class="cpp">
這樣,在js中直接通過
point.SetName();
就可以調用c++中point對象的SetName()函數了。
但是如何直接在js中創建一個c++對象實例、如何在c++中創建一個js對象呢??
這個就得用到FunctionTemplate了
Handle<FunctionTemplate> minebase_template =
FunctionTemplate::New(GetIsolate(),MinebaseConstructCallback);
minebase_template->SetClassName(v8::String::NewFromUtf8(isolate_,"JsMinebase"));
Handle<ObjectTemplate> minebase_proto = minebase_template->PrototypeTemplate();
minebase_proto->Set(v8::String::NewFromUtf8(GetIsolate(),"SetMinebaseName"), FunctionTemplate::New(GetIsolate(),SetMinebaseName));
Handle<ObjectTemplate> cloudapp_inst = minebase_template->InstanceTemplate();
cloudapp_inst->SetInternalFieldCount(1);
global->Set(v8::String::NewFromUtf8(GetIsolate(),"JsMinebase"), minebase_template);
以上代碼就是通過c++在v8引擎中構建一個js的類:JsMinebase,這樣就可以在js中直接創建JsMinebase對象了,類似
<pre name="code" class="javascript">var obj=new JsMinebase();
而要在js中創建c++中的類的實例,則通過MinebaseConstructCallback中來進行實現了,在其中既可創建c++中的對象,也可將找到的某個對象封裝到obj中
void MinebaseConstructCallback(const v8::FunctionCallbackInfo<v8::Value>& args) {
if (!args.IsConstructCall())
return /*Undefined(pCurMineMgr->isolate)*/;
CMineBase* cloudapp;
if (args.Length()==1)
{
int r = args[0]->Int32Value();
cloudapp = pCurMineMgr->FindMineObjectByID(r);
}
if (args.Length()==2)
{
Handle<Value> arg = args[0];
v8::String::Utf8Value valuename(arg);
cloudapp = pCurMineMgr->FindMineObject("節點",*valuename);
}
Handle<Object> object = args.This();
object->SetInternalField(0, External::New(pCurMineMgr->isolate,cloudapp)/*MakeWeakCloudApp(cloudapp)*/);
}
這樣,就達到了在js中創建c++對象的目的,然後就可以調用其函數了,當然,調用的函數也需要進行封裝